nasa says it will be the best opportunity ever to monitor a near miss by an object so large, and learn more about the asteroid have a prediction. the need to worry though, as the scientists say it will definitely not hit the globe. astronomers say the asteroid this size would cause an explosive equivalent to two and a half ton megaton bomb. >> we are back at 6:45 a.m. and authorities have all arrested the 45 year-old santa clara man for having explosives in his home. police say was a threat against a state senator at leland yee. the bomb squad detonated some of the explosives. the chp will blow up the rest of the close of this morning. a young man was shot on a campus at school and san leandro. investigators are now at that school looking for clues. they will be there for awhile, classes' have been cancelled today. this is the first homicide of the year for the lme that sheriff's office. olympic sprinter oscar the store has been charged with the murder of his third year-old girlfriend was shot dead in his home in south africa. police say pistorius, a double amputee known as blade runne